【需求】：编写程序，记录3只流浪猫的姓名、性别、花色和状况信息，并通过不同的遍历方式输出小猫信息。3只流浪猫的详细信息如下： 【思路】： 1. 定义类 猫； 2.创建3个流浪猫对象； 3.将对象存储到List集合中（使用多态）； 分别使用迭代器、foreach、for循环将List集合信息

输出。

以下是示例代码：

import java.util.*;

public class Cat {
    private String name;
    private String gender;
    private String color;
    private String status;

    public Cat(String name, String gender, String color, String status) {
        this.name = name;
        this.gender = gender;
        this.color = color;
        this.status = status;
    }

    public String getName() {
        return name;
    }

    public String getGender() {
        return gender;
    }

    public String getColor() {
        return color;
    }

    public String getStatus() {
        return status;
    }

    public void printInfo() {
        System.out.println("Name: " + name);
        System.out.println("Gender: " + gender);
        System.out.println("Color: " + color);
        System.out.println("Status: " + status);
    }
}

public class Main {
    public static void main(String[] args) {
        Cat cat1 = new Cat("Tom", "Male", "White", "Healthy");
        Cat cat2 = new Cat("Jerry", "Female", "Black", "Sick");
        Cat cat3 = new Cat("Luna", "Female", "Gray", "Missing");

        List<Cat> cats = new ArrayList<>();
        cats.add(cat1);
        cats.add(cat2);
        cats.add(cat3);

        System.out.println("Using Iterator:");
        Iterator<Cat> iterator = cats.iterator();
        while (iterator.hasNext()) {
            Cat cat = iterator.next();
            cat.printInfo();
            System.out.println();
        }

        System.out.println("Using For-each:");
        for (Cat cat : cats) {
            cat.printInfo();
            System.out.println();
        }

        System.out.println("Using For Loop:");
        for (int i = 0; i < cats.size(); i++) {
            Cat cat = cats.get(i);
            cat.printInfo();
            System.out.println();
        }
    }
}

运行结果如下：

Using Iterator:
Name: Tom
Gender: Male
Color: White
Status: Healthy

Name: Jerry
Gender: Female
Color: Black
Status: Sick

Name: Luna
Gender: Female
Color: Gray
Status: Missing

Using For-each:
Name: Tom
Gender: Male
Color: White
Status: Healthy

Name: Jerry
Gender: Female
Color: Black
Status: Sick

Name: Luna
Gender: Female
Color: Gray
Status: Missing

Using For Loop:
Name: Tom
Gender: Male
Color: White
Status: Healthy

Name: Jerry
Gender: Female
Color: Black
Status: Sick

Name: Luna
Gender: Female
Color: Gray
Status: Missing